Question

anshu put a young leaf plant in a water containing test tube. he put oil on the surface of the water to prevent evaporation and mark the level of water in the test tube. after 1 hour, he observed the level of water has gone down.
a) name this phenomenon occurs in plants.
b) why does this happen.
c)how this phenomenon helpful for plants?
d) which time in a day this phenomenon is faster and why​

Answer 1

Answer:

Transpiration Guttation

(i) It is regulated by guard cells It is due to root pressure.

(ii) It occurs at day time. It occurs at night.

(iii) Water escapes through stomata and lenticels. Water escapes through hydathodes only.

(iv) Water escapes in the form of water vapour. Water escapes from the hydathodes on the margin of the leaves in the form of water droplets.